python中使用PIL制作并验证图片验证码

#string模块自带数字、字母、特殊字符变量集合，不需要我们手写集合
import string
import random
import os
import uuid

import settings
from PIL import Image,ImageDraw,ImageColor,ImageFilter,ImageFont


class Code(object):
 # 生成随机生成数字或字母
 def random_hexdigits(self,len=1):
 return random.sample(string.hexdigits,len)
 
 # 生成干扰字符
 def punctuation(self,len=1):
 return tuple(random.sample(string.punctuation,len))
 
 # 定义干扰字符颜色
 def random_color(self,min=64,max=255):
 return tuple((random.randint(min,max) for i in range(3)))
 
 # 生成验证码
 def creat_code(self,width=80,height=24,color=(192,192,192)):
 image = Image.new('RGB',(width,height),color)
 #建议下载几款字体，变换下风格，我在setting粒定义了static路径，这里就直接导入了
 font = ImageFont.truetype(os.path.join(settings.STATICPATH,'fonts/Lora-Regular.ttf'),20)
 draw = ImageDraw.Draw(image)
 self.fill_color(draw,image,5)
 self.fill_dischar(draw,10)
 code = self.fill_char(draw,4,10,font)
 image_name = '{}.jpeg'.format(uuid.uuid4().hex)
 image_path = os.path.join(settings.STATICPATH,'code/{}'.format(image_name))
 print(image_path)
 image.save(image_path)
 return {'code': code,'image_path': image_path}
 
 # 填充颜色
 def fill_color(self,draw,interval):
 for i in range(0,image.width,interval):
  for j in range(0,image.height,interval):
  draw.point((i,j),fill=self.random_color())
 
 # 填充验证码
 def fill_dischar(self,interval):
  dis = self.punctuation()
  j = random.randrange(3,image.height - 3)
  draw.text((i,dis[0],fill=self.random_color(64,255))
 
 # 填充验证码
 def fill_char(self,num,interval,font):
 code = ''
 for i in range(num):
  cha = self.random_hexdigits()
  code += str(cha[0])
  j = random.randrange(0,5)
  # print(cha)
  # print(image.width*(i/num)+interval,j)
  draw.text((image.width * (i / num) + interval,cha[0],fill=self.random_color(32,127),font=font)
 return code


if __name__ == "__main__":
 code = Code()
 print(code.creat_code())

import os
from flask import Flask,Response
from flask import render_template
from utils.code import Code

app = Flask(__name__)


@app.route('/')
def Register():
 return render_template('verify.html')


@app.route('/codes/')
def code():
 infor = Code().creat_code()
 image_path = infor["image_path"]
 code = infor['code']
 
 print(image_path)
 with open(image_path,'rb') as f:
  image_content = f.read()
 os.remove(image_path)
 return Response(image_content,mimetype='jpeg')


if __name__ == '__main__':
 app.run(debug=True)

 <div class='form-row'>
   <form id="email_register_form" method="post" autocomplete="off">
    <div class="form-group ">
     <label>邮     箱</label>
     <input type="text" id="id_email" name="email" value="None" placeholder="请输入您的邮箱地址"/>
    </div>
    <div class="form-group ">
     <label>密     码</label>
     <input type="password" id="id_password" name="password" value="None" placeholder="请输入6-20位非中文字符密码"/>
    </div>
    <div class="form-group captcha1 ">
     <label>验 证 码</label>
     <img src="/codes/" alt="captcha" title="点击切换" class="captcha"
       onclick="this.src='codes/?'+Math.random()"/>
     <input autocomplete="off" id="id_captcha_1" name="captcha_1" height="30px" type="text">
    </div>
    <input class="btn btn-green" id="jsEmailRegBtn" type="submit" value="注册"/>
   </form>